Thermal actuator REHAU UNI 24V – electronic valve actuator for HVAC zone valves, 24 V

REHAU UNI 24V thermal actuator is an electronic valve actuator designed for HVAC zone and control valves that operate on 24 V. It provides motorized control of valve position for heating and cooling circuits, enabling automated zone regulation in hydronic systems. The compact actuator integrates with thermostats and building controllers to manage room climate and to control radiator or manifold valves in residential and commercial installations.

Advantages

The actuator offers precise position control and fast response to control signals, reducing temperature fluctuation in individual zones. Its electronic design ensures consistent operation with low power consumption and reliable integration into 24 V control systems. The actuator’s compact form factor and straightforward mounting make installation and maintenance simple without modifying existing valves.

Suitable for

• Motorized control of radiator and manifold valves
• Room temperature zoning in hydronic heating systems
• Integration with thermostats and building automation controllers
• Retrofit projects where 24 V actuators are required

Key specifications

• Supply voltage: 24 V DC/AC compatible control voltage
• Actuation type: electronic motorized valve actuator
• Control compatibility: standard on/off and common building controller outputs
• Installation: compact inline mounting on standard HVAC zone valves
• Application environment: indoor hydronic heating and cooling systems

How to use

Mount the actuator onto the compatible zone or control valve following the valve manufacturer’s mounting instructions. Connect the 24 V control wires to the building controller or thermostat output designed to operate actuators. After mechanical mounting and electrical connection, cycle the controller to verify full travel and correct response. Adjust controller settings as required to achieve desired room temperature control and zone sequencing.

Usage recommendations

For reliable long-term operation, use the actuator within recommended 24 V control circuits and protect wiring from moisture and mechanical damage. Verify compatibility with the valve body before installation and perform functional testing after connection. Regular inspection during routine system maintenance helps ensure consistent zone regulation.